Water-soluble electroplating brightener and preparation method thereof

The invention discloses a water-soluble electroplating brightener. The water-soluble electroplating brightening agent comprises the following raw materials of, in parts by weight, 15-25 mL/L of a mainbrightener, 12-20 mL/L of an auxiliary brightener, 1.5-3.5 mL/L of an inhibitor, 9-14 mL/L of a leveling agent and 0.7-1.2 mL/L of other auxiliaries according to the volume fraction of each raw material in each liter of electroplating solution. The water-soluble electroplating brightener is composed of 100% water-soluble raw material, does not need an organic solvent, and can effectively reduce environmental pollution and harm to the body of an electroplating worker; the hole filling effect on the surface of an electroplating (electrogalvanizing) base material is good, the glossiness of a plating layer is high, and the bright effect is excellent; in addition, except for achieving the bright effect, the electric current efficiency, the elongation, the tensile strength and other propertiesof the (electrogalvanizing